package com.xzy.cinematicket.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * Servlet Filter implementation class VisitFilter
 */
@WebFilter("/*")
public class VisitFilter implements Filter {

    public VisitFilter() {
    }

	public void destroy() {
	}

	public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest)req;
		HttpServletResponse response = (HttpServletResponse)res;
		HttpSession session = request.getSession(false);
		String URI = request.getRequestURI();
		if(session != null){
			if(session.getAttribute("user")!=null){
				chain.doFilter(request, response);
			}else if(URI.contains("login")||URI.contains("register")||URI.contains("01_image")||URI.contains("user")||URI.contains("checked")){
				chain.doFilter(request, response);
			}else{
				response.sendRedirect(request.getContextPath() + "/pages/login.jsp");
			}
		}else if(URI.contains("login")||URI.contains("register")||URI.contains("01_image")||URI.contains("user")||URI.contains("checked")){
			chain.doFilter(request, response);
		}else{
			response.sendRedirect(request.getContextPath() + "/pages/login.jsp");
		}
	}

	public void init(FilterConfig fConfig) throws ServletException {
	}

}
